Boron Nitride

Thermally Conductive, Electrically Insulating, Highly Lubricious

Boron Nitride fillers from 3M­™ offer a way of dramatically increasing thermal conductivity of polymer composites. Finished parts can achieve up to 10 W/mK in-plane and 4 W/mK through-plane. As a material it is highly electrically insulating and lightweight, certainly benefiting select applications in electronics and transport. Miniaturization of electronic components and a rapid growth in electric battery technologies have been key drivers in the success of this material, although these are just two sectors amongst a diverse range of use cases.

Boron nitride is also widely used in high temperature lubrication applications, including where incidental food contact is required.

3M™ offer a unique range of platelets, flakes and agglomerates - each suited to a different application. Get in touch with the technical sales team at Lawrence Industries to see how we can help with your thermal conductivity project.


    • A range of particle size distributions and morphologies available (platelet, flake, agglomerate).

    • Low density of 1.2-1.6 g/cc.

    • High electrical resistivity > 1015

    • High thermal conductivity of 400 W/mK in-plane.

    • Low Mohs Hardness of < 2.


    • Formulate polymers with thermal conductivities suited for high performance heat dissipation requirements.

    • Lightweight nature means a small increase in part density when compared to other inorganic additives.

    • Extremely lubricious and soft so low wear on equipment.

    • Excellent pourability and low dusting.

    • Reductions in cycle times for injection moulding due to rapid cooling.

Typical Applications

    • High capacity batteries.

    • Thermal interface materials (TIM) in electronics.

    • LED lighting technology - secondary heat sinks and TIM.

    • High temperature lubricants.

    • Motors, generators and transformers.

Featured grades with technical datasheets

A brief overview of the key grades is given below. You will find the Technical Datasheets (TDS) available for download. If you are looking for a Safety Datasheet (SDS) or Product Safety Information (PSI) then please get in touch by phone or via the contact buttons at the top of the page.

Should you not find what you are looking for here then please note that we have further grades available besides these. One of our Technical Sales team will be happy to help. All of the sales team are technically qualified and will be able to advise you on which product to choose. You can either call us, email us or fill in a quick form at the top of the page to get us to call you (Request a Callback). A sample can be requested via the button at the top of the page as well. Please note that by providing us with your contact details, you are agreeing for us to potentially contact you.

Related brochures & technical literature

You will find some of the key product brochures available for download below. There are more brochures available upon request. If you would like to discuss your enquiry further then please get in contact by phone or by filling in the "Request a Callback" form at the top of the page. Someone from the technical sales team will then call you within 24 hours, to discuss your project further.

Tailoring the thermal conductivity of plastic materials with 3M™ Boron Nitride Cooling Fillers - Presentation

A presentation that gives an introduction to the 3M™ Boron Nitride range and puts this in comparison with other technologies that exist for improving the thermal conductivity of polymers. It then looks at how the physical parameters of different grades can effect the thermal conductivities and moves on to recommend different grades for specific applications.

Tailoring the thermal conductivity of plastic materials with 3M™ Boron Nitride Cooling Fillers Presenation /




3M™ Boron Nitride Cooling Fillers - Smart Coolness for Excellent Performance

A look at some of the performance benefits that can be attained with the use of boron nitride and an examination of some of the key application areas.

3M™ Boron Nitride Cooling Fillers - Smart Coolness for Excellent Performance Brochure /